The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2015
Filed:
Mar. 15, 2013
Applicant:
Michihiro Nakai, Sakura, JP;
Inventor:
Michihiro Nakai, Sakura, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/10 (2006.01); H01S 3/06 (2006.01); H01S 3/23 (2006.01); H01S 3/094 (2006.01); H01S 3/17 (2006.01);
U.S. Cl.
CPC ...
H01S 3/10084 (2013.01); H01S 3/061 (2013.01); H01S 3/0612 (2013.01); H01S 3/094053 (2013.01); H01S 3/176 (2013.01); H01S 3/2308 (2013.01);
Abstract
An object of the invention is to provide a laser device having high optical amplification efficiency. A laser device includes: an optical fiber which includes a core and a clad and through which seed light and pumping light propagate; and a glass rod which is doped with rare earth elements, has a diameter larger than that of the core, wherein the seed light and the pumping light output from the optical fiber are input to the glass rod to have increased diameters, and output light including at least the amplified seed light is output from the glass rod.